04-02-2014, 09:49 AM
On my 93 coach while it was on the sales lot at MOT someone switched the generator on while on shore power with a/c running and it blew up the transfer switch along with the surge protector. So the a/c's are not the only vulnerable part. Any significant 120v load is best shut off before switching.
Jon Kabbe
1993 coach 337 with Civic towed